Enclosed structural support



FIG. 1 is a front perspective view of an enclosed structural support according to the new design;

FIG. 2 is a rear perspective view of the enclosed structural support of FIG. 1 ;

FIG. 3 is a front elevation view of the enclosed structural support of FIG. 1 ;

FIG. 4 is a rear elevation view of the enclosed structural support of FIG. 1 ;

FIG. 5 is a right elevation view of the enclosed structural support of FIG. 1 ;

FIG. 6 is a left elevation view of the enclosed structural support of FIG. 1 ;

FIG. 7 is a top plan view of the enclosed structural support of FIG. 1 ; and,

FIG. 8 is a bottom plan view of the enclosed structural support of FIG. 1 . 

CLAIM The ornamental design for an enclosed structural support, as shown and described. 